ICU provides a Unicode implementation, with functions for formatting numbers, dates, times, and currencies (according to locale conventions, transliteration, and parsing text in those formats). It provides flexible patterns for formatting messages, where the pattern determines the order of the variable parts of the messages, and the format for each of those variables. These patterns can be stored in resource files for translation to different languages. Included are more than 100 codepage converters for interaction with non-unicode systems.

Verbiste is a French conjugation system
implemented as a C++ library, a GNOME applet, and
two command-line tools. It can conjugate verbs and
analyze conjugated verbs to determine their mode,
tense, and person. The knowledge base contains
over 6700 verbs.

Emdros is a corpus query system for storing and searching linguistically annotated text. It is very generic, supporting almost any kind of annotation from almost any linguistic theory. All linguistic levels of analysis are supported, including phonology, morphology, the lexical level, syntax, and discourse. The core libraries act as a middleware layer between a client and an underlying SQL database. MySQL, PostgreSQL, and SQLite (2 and 3) are supported.

Apache Lucene is a high-performance,
full-featured text search engine library written
entirely in Java. It is suitable for nearly any
application that requires full-text search,
especially cross-platform.

ANTLR (ANother Tool for Language Recognition) is a language tool that provides a framework for constructing recognizers, compilers, and translators from grammatical descriptions containing C++, Java, or Sather actions. It is similar to the popular compiler generator YACC, however ANTLR is much more powerful and easy to use. ANTLR-produced parsers are not only highly efficient, but are both human-readable and human-debuggable (especially with the interactive ParseView debugging tool). ANTLR can generate parsers, lexers, and tree-parsers in either C++, Java, or Sather. ANTLR is currently written in Java.

Redet is a tool for developing and executing regular expressions using any of more than 50 search programs, editors, and programming languages, intended both for developing regular expressions for use elsewhere and as a search tool in its own right. For each program in each locale, a palette showing the available constructs is provided. The properties of each program are determined by runtime tests, which guarantees that they will be correct for the program version and locale. Additional features include persistent history, extensive help, a variety of character entry tools, and the ability to change locale while running. Redet is highly configurable and fully supports Unicode.

uni2ascii and ascii2uni provide conversion in both directions between UTF-8 Unicode and more than thirty 7-bit ASCII equivalents, including RFC 2396 URI format and RFC 2045 Quoted Printable format, the representations used in HTML, SGML, XML, OOXML, the Unicode standard, Rich Text Format, POSIX portable charmaps, POSIX locale specifications, and Apache log files. It can also convert between the escapes used for Unicode in languages such as Ada, C, Common Lisp, Java, Pascal, Perl, Postscript, Python, Scheme, and Tcl.

pyPEG is a quick and easy solution for creating a parser in Python programs. pyPEG uses a PEG language in Python data structures to parse, so it can be used dynamically to parse nearly every context free language. The output is a plain Python data structure called pyAST, or, as an alternative, XML.

Msort sorts files in sophisticated ways. Records
may be fixed size, newline-separated blocks, or
terminated by any specified character. Key fields
may be selected by position, tag, or character
range. For each key, distinct exclusions,
multigraphs, substitutions, and a sort order may
be defined or locale collation rules used.
Comparisons may be lexicographic, numeric, numeric
string, hybrid, random, by string length, angle,
domain name, date, time, month name, or ISO8601
timestamp. Keys may be reversed so as to generate
reverse dictionaries. Optional keys are supported.
Unicode is supported, including full case-folding.
Msort itself has a somewhat complex command line
interface, but may be driven by an optional GUI.